<template>
    <el-container class="home-container">
        <el-header>
            <div>
                <img src="../assets/heima.png" alt="">
                <span>电商后台</span>
            </div>
            <el-button type="info" @click="logout">退出登录</el-button>
        </el-header>
        <el-container>
            <el-aside :width="isCollapse?'64px':'200px'">
                <div class="toggle-button" @click="toggleCollapse">|||</div>
                <el-menu :default-active="activePath"
                         class="el-menu-vertical-demo"
                         background-color="#333744"
                         text-color="#fff"
                         active-text-color="#409eff"
                         unique-opened
                         :collapse="isCollapse"
                         :collapse-transition="false"
                         router
                >
                    <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
                        <template slot="title">
                            <i :class="icons[item.id]"></i>
                            <span>{{item.authName}}</span>
                        </template>
                        <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id"
                         @click="saveNavState('/'+subItem.path)">
                            <template slot="title">
                                <i class="el-icon-menu"></i>
                                <span>{{subItem.authName}}</span>
                            </template>
                        </el-menu-item>
                    </el-submenu>
                </el-menu>
            </el-aside>
            <el-main>
                <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>

<script>
    export default {
        data() {
            return {
                menulist: [],
                isCollapse: false,
                activePath:'',
                icons: {
                    '125': 'iconfont icon-user',
                    '103': 'iconfont icon-tijikongjian',
                    '101': 'iconfont icon-shangpin',
                    '102': 'iconfont icon-danju',
                    '145': 'iconfont icon-baobiao'
                },
            }
        },
        created() {
            this.getList();
            this.activePath=window.sessionStorage.getItem('activePath');
        },
        name: 'Home',
        methods: {
            logout() {
                window.sessionStorage.clear();
                this.$router.push('/login');
            },
            async getList() {
                let {data: res} = await this.$http.get('menus');
                if (res.meta.status != 200) {
                    return this.$message.error("请求列表错误");
                }
                this.menulist = res.data;
            },
            toggleCollapse() {
                this.isCollapse = !this.isCollapse;
            },
            saveNavState(activePath){
                window.sessionStorage.setItem('activePath',activePath);
                this.activePath=activePath;
            },
        }
    }
</script>

<style scoped lang="less">
    .home-container {
        height: 100%;
    }

    .el-header {
        background-color: #373d41;
        padding-left: 0;
        display: flex;
        justify-content: space-between;
        align-items: center;
        color: #fff;
        font-size: 20px;

        > div {
            display: flex;
            align-items: center;

            > span {
                margin-left: 15px;
            }
        }
    }

    .el-aside {
        background-color: #333744;

        .el-menu {
            border-right: none;
        }
    }

    .el-main {
        background-color: #eaedf1;
    }

    .iconfont {
        margin-right: 10px;
    }

    .toggle-button {
        background-color: #4A5064;
        font-size: 10px;
        line-height: 24px;
        color: #fff;
        text-align: center;
        letter-spacing: 0.2em;
        cursor: pointer;
    }
</style>